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4 years ago

According to current scientific thinking how did the solar system that contains earth form

2 answers:

7 0

Scientists think the solar system formed around 4.6 billion years ago from a cloud of dust and gas known as a solar nebula. Gravity collapsed the material on itself as it began to spin. This formed the sun in the middle. The planets formed when rock joined together in clumps and became bigger and bigger. And thus, our solar system was formed. Hope this helped

KiRa [710]4 years ago

6 0

You might be interested in

Find the velociity of a car which travels 35 m to the right over a period of 40 seconds

GalinKa [24]

Answer:

the velocity of the car is 0.875 m/s

Explanation:

$v = d \div t \\ v = 35m \div 40sec = 0.875 \: m \: per \: sec$

therefore the V of car is 0.875 m

8 0

3 years ago

A flat disk, a solid sphere, and a hollow sphere each have the same mass m and radius r. The three objects are arranged so that

Paladinen [302]

Answer:

$I_{disc} = \frac{1}{2}mR^2$

$I_{sphere} = \frac{2}{5}mR^2$

$I_{hollow} = \frac{2}{3}mR^2$

so largest moment of inertia is for Hollow Sphere

Explanation:

Moment of inertia flat disc is given as

$I_{disc} = \frac{1}{2}mR^2$

moment of inertia of solid sphere

$I_{sphere} = \frac{2}{5}mR^2$

moment of inertia of hollow sphere

$I_{hollow} = \frac{2}{3}mR^2$

all the three objects are given with same mass and same radius

so largest moment of inertia is for Hollow Sphere

8 0

4 years ago

An athelete swims from northend to southend of a 50.0m pool in 20.0s and makes the return trip to the starting position in 22.0s

Sauron [17]

Average velocity =

(distance between start-point and end-point) / (time from start to end)
in the direction of
(direction from the start-point to the end-point) .

a). The average velocity for the first half is

   (50m)/(20sec) = 2.5 m/s south.

b). The average velocity for the second half is

      (50m)/(22sec) = 2.273 m/s north

c). Average velocity for the round trip is zero, because
the start-point and end-point are the same point.

However ...

Average SPEED = (total distance covered) / (time to cover the distance)

Average SPEED for the round trip is

   (100 m) / (42 sec) = 2.381 m/s (rounded)

4 0

3 years ago

g A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle (charge = -50 mC) is plac

krok68 [10]

Answer:

Explanation:

We shall find electric field at origin due to two given charges sitting on the either side of origin .

Total field will add up due to their same direction .

Field due to a charge Q

= 9 x 10⁹ x Q / R² ; R is distance of point , Q is charge

Field due to first charge

= 9 x 10⁹ x 40 x 10⁻³ / 2² x 10⁻⁴

= 90 x 10¹⁰ N/C

Field due to second charge

= 9 x 10⁹ x 50 x 10⁻³ / 2² x 10⁻⁴

= 112.5 x 10¹⁰ N/C

Total field

= 202.5 x 10¹⁰ N/C

Force on given charge at origin

= charge x field

= 4 x 10⁻³ x 202.5 x 10¹⁰

= 810 x 10⁷ N .

4 0

4 years ago

If a cotton ball is dropped from 12 meters with air resistance, what will be the velocity and acceleration at t = 1.00 s?

kifflom [539]

That depends on the weight, shape, size, density, and moisture content
of the cotton ball, as well as on the length, shape, thickness, and surface
texture of every little cotton fiber sticking out of it.

Now you know why we typically ignore air resistance when we work with
objects falling in gravity.

4 0

4 years ago